The reputation of piranhas precedes them. These feisty South American fish are infamous for their sharp teeth, fierce demeanor, and great appetites, which allegedly can force a group of piranhas to skeletonize a cow in few minutes. Yet while they are a powerful force in their native waterways, piranhas are also far more assorted - and less dangerous to humans and cattle - than usually believed. In hopes of clarifying some notion on these misunderstood fish, here are a few fascinating and lesser-known facts about piranhas. (Photo : Getty Images) 1. Piranhas Pose Little Danger to Human Piranha attacks on humans are uncommon, and when they do happen, usually involve one or just a few bites to the hands or feet by one fish, causing injuries that are excruciating but not life-threatening. There are very few recorded cases of piranhas consuming a human, and not less than three of those involved people who had already lost their lives from drowning or other causes.